Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity (Details 2)

v2.4.1.9
Shareholders' Equity (Details 2) (USD $)
12 Months Ended
Jan. 03, 2015
Dec. 28, 2013
Jan. 02, 2015
Oct. 21, 2009
Shareholders' Equity        
Outstanding Options, Weighted Average Remaining Contractual Life (in years) 4 years 6 months 21 days 4 years 11 months 26 days    
Options exercisable at January 3, 2015 $ 212us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue $ 326us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue    
Closing stock price used for calculation of intrinsic value     $ 2.67us-gaap_SharePrice $ 1.97us-gaap_SharePrice
5.05 to 6.41 [Member]        
Shareholders' Equity        
Exercise price, minimum $ 5.05us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= arci_A505To641MemberMember
     
Exercise price, maximum $ 6.41us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= arci_A505To641MemberMember
     
3.55 to 4.69 [Member]        
Shareholders' Equity        
Exercise price, minimum $ 3.55us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= arci_A355To469MemberMember
     
Exercise price, maximum $ 4.69us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= arci_A355To469MemberMember
     
2.22 to 2.80 [Member]        
Shareholders' Equity        
Exercise price, minimum $ 2.22us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= arci_A222To280Member
     
Exercise price, maximum $ 2.80us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= arci_A222To280Member
     
1.87 [Member]        
Shareholders' Equity        
Exercise price, minimum $ 1.87us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= arci_A187Member